1.创建文件夹    /components/waterfall/

 文件夹结构如图

各文件内容：

.wxml

<view class="waterfallView">
  <view wx:for="{{resultData}}" wx:for-item="i" wx:for-index="iIndex" wx:key="iIndex" class="waterfallColumn">
    <view class="waterfallItem" wx:for="{{i}}" wx:for-item="j" wx:for-index="jIndex" wx:key="jIndex" >
      <image class="img" src="{{j}}" mode="widthFix"/>
		</view>
	</view>
</view>

.wxss

.waterfallView{
  width: 100vw;
  height: 100vh;
  padding: 2%;
  display: flex;
  justify-content: space-around;
}
.waterfallColumn{
  display: flex;
  flex-direction: column;
  width: calc(50vw - 5%);
}
.waterfallItem{
  background: white;
  border-radius: 15rpx;
  margin-bottom: 16rpx;
}
.img{
  border-radius: 15rpx;
  width: 100%;
  height: 100%;
}

.js

Component({
  properties:{
    dataArr:{
      type:Array,
      value:[]
    }
  },
  observers:{
    dataArr(val){
      this.setData({
        dataArray:val
      })
      this.formatData(val)
    }
  },
  data:{
    dataArray:[],
    resultData:[],
    column:2,
    curWidthOfModel:0
  },
  lifetimes:{
    created(){
      let width = wx.getSystemInfoSync().windowWidth
      this.setData({
        curWidthOfModel:width
      })
    }
  },
  methods:{
    formatData(arr){
      if(arr === []){
        return
      }
      const resultData = arr.reduce(
        (acc, cur, index) => {
          const targetIndex = index % this.data.column;
          acc[targetIndex].push(cur);
          return acc;
        },
        Array.from(Array(this.data.column), () => [])
      )
      this.setData({
        resultData
      })
    }
  }
})

.json

{
  "component": true
}

我这里直接就是写死了两列排列

然后在用到该组件的页面文件夹下  .json 文件夹中引入

注意：文件路径不要写错了！！！这里只是一个参考

 然后使用该组件  对其dataArr【注意：我这里定义的是dataArr!!!】属性进行赋值

 效果如上图  ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑